package com.example.blog.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Utils {
    public static String code(String str){
        try{
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(str.getBytes());
            byte[]byteDigest=md.digest();
            int i;
            StringBuffer buf = new StringBuffer("");
            for (int offset = 0 ; offset < byteDigest.length;offset++){
                i =byteDigest[offset];
                if(i<0)
                    i+=256;
                if(i<16)
                    buf.append("0");
                buf.append(Integer.toHexString(i));
            }
//            32位加密
//            return buf.toString().substring(8,24);
            return buf.toString();

        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return null;
        }

    }
    public static void main (String[] args){
        System.out.println(code("147258369"));
    }
}
